Space-block.



H. GEISENHUNER.

SPACE BLOCK.

APPLICATION IILBD JAN. 16, 1911.

1,083,822, Patented Jan. 6, 1914.

Witnesses:

% I g Henry Geisenhner,

H is fi ttorn eg.

UNITED STATES PATENT OFFICE.

HENRY GEISENI-IONER, OF SGHENEGTADY, NEW YORK, ASSIGNOR TO GENERALELECTRIC COMPANY, A CORPORATION OF NEW YORK.

SPACE-BLOCK.

Specification of Letters Yatent.

Patented Jan. 6,1914.

To all whom-it may concern Be it known that I, HENRY GEIsnNHoNER, acitizen of the United States, residing at Schenectady, in the county ofSchenectady, State of New York, have invented certain new and usefulImprovements in Space- Blocks, of which the following is aspecification.

The object of my invention is the provision of moreeflicient means forattaching space blocks to adjacent laminations in machines, moreparticularly the rotating parts of electrical machines.

Heretofore some difiiculty has been experienced in attaching the spaceblocks to the laminations in such a manner that the space blocks remainin position under the various and varying strains to which they aresubjected, as the centrifugal strain during rotation at high speeds. Ithas been found with very high speeds that the present practics ofriveting theseblocks to the laminations is not entirely satisfactory.

In the drawings which form a part of this specification, the referencenumerals indicate the same parts in all the figures.

Figure 1 is an elevation of a lamination having space bars attachedthereto. Fig. 2 is a sectional view showing a number of laminations anda space block therebetween. Figs. 3 and 4 show two forms of the clip.Fig. 5 is a perspective view of a space block. Fig. 6 is a view partlyin section showing the method of welding the clip to the laminations.

1 is a plate to which it is desired to attach a block 2. In order to dothis, I place a clip 3 over the block and weld the end or ends of theclip to the plate 1. The clip may have two legs of approximately thesame length, as is shown in Fig. 3, but, in certain cases, one leg onlyof suificient length to be welded to the plate 1 may be used; such aclip is shown at t. When desirable, obviously a plurality of clips maybe used engaging the same bar. It is undesirable for the clip to extendabove the top edge of the bar 2. To prevent this and in order that theclip may firmly hold the bar in place, I cut in the bar, a notch 5 ofthe same width as the clip and of a depth equal to the thickness or" theclip.

To weld the clip to the plate and thus attach the bar to the plate, itis convenient to place plate 1, bar 2 and clip 8 in position between themovable electrodes 6 of a welding machine. As the end or ends of theclip melts down, the electrodes 6 are moved toward each other and forcethe clip 3 down until it is completely seated in the notch 5 andsecurely welded to the plate 1. Any common or desired form of weldingmachine may be used wherein the electrodes are capable of movingtogether and exerting suflicient pressure.

In electrical machines having a rotating part, space blocks are used toseparate the laminations at various points to provide ventilatingspaces. It has some times been found difficult to so attach these spaceblocks to the laminations that they will resist a centrifugal strainduring rotation at high speeds. My invention is particularly adapted toattaching these blocks, but, of course, is not limited to this oneapplication.

IVhat I claim as new, and desire to secure by Letters Patent of theUnited States, is

1. The combination of laminations, a space block therefor provided witha notch and a clip engaging in the notch and at tached to one of thelaminations.

2. In a dynamo-electric machine, the combination with laminations, of aspace block therefor provided with a notch and a clip engaging in thenotch and secured to one of the laminations on both sides of the block.

In witness whereof, I have hereunto set my hand this 14th day ofJanuary. 1911.

HENRY GEISENI-IONER.

Witnesses BENJAMIN B. HULL, HELEN Onronn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

